R31 LCD backlight problem

[JG]

R31 boots up, but backlight sometimes does not come on for several minutes--sometimes not at all without further off/on tries. Same when returning from standby. Once on, light stays on. Does this sound like a failing inverter board or some other problem?

[mitchellst]

Sounds like the inverter to me. It would be the cheapest thing to try anyway.

If you're getting red tint or any other video problems, then it could be a failing LCD, but it sounds like the inverter.

[JG]

Thanks. Would it be worth first trying reconnecting the cables to the inverter before ordering a new one? I've heard that the contacts can oxidize and cause a bad connection.

[mitchellst]

I'm not sure about that, but I guess it could be possible. I would try toggling the sleep/standby button that the lid hits when you close it.

I've heard people talk about that button/switch sticking, which may be possible... however... I was working on an R31 the other day that had the same problem. When I toggled that switch, it would either make it go into standby, or make the backlight come back on/off depending on how hard I pressed it. Anyway, it ended up being the FL inverter. I guess if it completely failed, then that probably wouldn't work, but if it's intermittent, then it may be worth testing.

Good luck either way.